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AMBIO

, Volume 39, Issue 4, pp 295–304 | Cite as

The Effects of Habitat on Coral Bleaching Responses in Kenya

  • Gabriel Grimsditch
  • Jelvas M. Mwaura
  • Joseph Kilonzo
  • Nassir Amiyo
Review Paper

Abstract

This study examines the bleaching responses of scleractinian corals at four sites in Kenya (Kanamai, Vipingo, Mombasa and Nyali) representing two distinct lagoon habitats (relatively shallow and relatively deep). Bleaching incidence was monitored for the whole coral community, while zooxanthellae densities and chlorophyll levels were monitored for target species (Pocillopora damicornis, Porites lutea, and Porites cylindrica) during a non-bleaching year (2006) and a year of mild-bleaching (2007). Differences in bleaching responses between habitats were observed, with shallower sites Kanamai and Vipingo exhibiting lower bleaching incidence than deeper sites Nyali and Mombasa. These shallower lagoons display more fluctuating thermal and light environments than the deeper sites, suggesting that corals in the shallower lagoons have acclimatized and/or adapted to the fluctuating environmental conditions they endure on a daily basis and have become more resistant to bleaching stress. In deeper sites that did exhibit higher bleaching (Mombasa and Nyali), it was found that coral recovery occurred more quickly in the protected area than in the non-protected area.

Keywords

Coral reef Bleaching Resilience 

Notes

Acknowledgments

This study was made possible by the generous support of the MacArthur Foundation and the Swedish International Development Agency.

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Copyright information

© Royal Swedish Academy of Sciences 2010

Authors and Affiliations

  • Gabriel Grimsditch
    • 1
  • Jelvas M. Mwaura
    • 2
  • Joseph Kilonzo
    • 3
  • Nassir Amiyo
    • 4
  1. 1.IUCN Climate Change and Coral Reefs Working GroupBamburiKenya
  2. 2.CORDIO East AfricaBamburiKenya
  3. 3.Kenya Marine and Fisheries Research InstituteBamburiKenya
  4. 4.Coast Conservation Area, Kenya Wildlife ServiceBamburiKenya

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